Check-operated radio receiving set



Feb.A 23 1926i 1,573,886 Y E. E. `yvEssoN CHECK OPERATED RADIO RECEIVING SET Filed Apil23 l 1925 4 Sheets-Sheet l 13mm/tot I @www y amm Feb. 23 ,1926.

E. E.l WESSON CHECK OPERATED RADIO RECEIVING SET l Filed April 23; 1925 4 Sheets-Sheet 2 Feb. 23 1926.

' E. E. WEssoN CHECK OPERATEU RADIO RECEIVING sm' Filed April 25 I 192,5Y

4 Sheets-Sheet 3 E. E. WESSON 'CHECK OPERATED RADIO RECEIVING SET Feb. 23

4 sheets-sheet 4 Filed April 25 1925 Patented Feb. 23, 1926.

UNITED STATES,I

1,573,886 PATENT OFFICE.

.'ERNES'I E. WESSON, OF BLAIR STATION, PENNSYLVANIA, ASSIGNOR OF ONE-SIXTH TO ABRAHAM JOHNSON, F BLAIR STATION,PENNSYLVANIA, ONE-SIXTH TO 4FL'IEHYIING- H. JACKSON, AND ONE-SIXTH TO ROY L. .GISSENDANNER, BOTH 0F oLAmToN, PENNSYLVANIA.

ACHEeK-oriimvrnn RADIO'RECEIVING sur.

Application led April 23, 1925. Serial No. 25,285.

'To (171 whom. it 72mg/ concern.:

Be it known thatvI, -EiiNiisT E. WrissoN, a citizen of the United States, residing at Blair Statiom. in the county of Allegheny andState of Pennsylvania, have invented certain newv and useful vImprovements in Check-Operated Radio Receiving Sets, of which the following is a specification, reference being had to the accompanying drawings. d i' This invention relatesto radio receiving sets and more particularly to a check controlledv receivingl set.

An important object of the invention is to provide in a device of this character a check controlled apparatus completing the circuit of a radio receiving set and rendering the same operative.

A further object of the invention is the provision of a deviceof this character in which` the radio receiving set 4includes multiple stages and in which the circuits of all stages are open until the proper check is inserted.

A still further object of the invention is to provide a device of this character having time controlled means for releasing the check to thereby reopen the circuit of the vreceiving set.

A still further object of the invention is the provision of a device of this .character in Which the check controlled'apparatus is capable of simultaneously receiving a plurality of checks and has means for indicating Whenthe last of these checks is bci ing employed.

A'further object of the invention is to provide in a device of this character means whereby the receiving set may be operated Iat thepption of the owner without the use of checks.

These .and other objects I attain by the construction shown in the 'accompanying drawings, wherein for the purpose of illusltration is shown a preferred embodiment of my invention Iand wherein Figure 1 is `a perspective view ofl a checkv operated radio receiving set constructed inv accordance with my invention; l

vFigi-ire 2 is a sectional view taken through the'check chutel and the associated meclianism';

Figure 3 is a face View of the annulus uPplied to the clock;

Figure 4 is a detailed sectional View showing the manner of mounting the conductors upon the annulus;

Figure 5 is a second sectional view through the check chute showing in solid lines the positions occupied by the arts when there are a plurality of checks within the chute'and in dotted lines the position of the parts when there are no checks present in the check chute;

Figure 6 is a detailed sectional view showing the connector for completing the circuits of the audion bulbs;

Figure 7 is a detailed sectional4 view through the check chute showing the check stop in elevation; and

Figure 8 is a diagrammatic view showing they diagram of the receiving set pro er and the check operated and time control ed apparatus. i

Referring now more particularly '.to the drawings and more particularly to the diagrammatic view yof Figure 8, the circuit disclosed in this diagrammatic view with the exception -of thatportion lying to the ,left of line A' of the diagram may be the usual radioreceiving circuit of any desired character. The present disclosure is of the well known standard type of a commercially produced receiving set. The receiving set employed preferably employs at least two stages, a detector and one stage of amplification and cach stage is open circuited.

ln the present instance, this is accom# plished by providing separate filament batteries 10 and 11 for the detector audion 19., and amplifier 13 employed in-the set. One side of each of the batteries 10 and 11 is connected directly to the filament F of the audion. 1() is connectedto a loop connection including wires 14 and 15 of which the wire 15 is connected -to the battery. This connection is open at two points, one of which is clos-' able by a manually operable switch 16 and at the other of which the wires 14 and 15 have secured thereto spaced contacts 14, 15"'.

The opposite side of the battery The wire 15 is connected to the opposite terminal 'of the filament F in the usual man.-

neil and is isolated from the battery by the gaps at the switch and at the contacts 14,

15".. Similarly the opposite terminal of the l battery 11 has connected thereto a loop connection including wires 17, 18, the connec- 21 with the side of the'filament battery of the i audion of the -rst stage ot' the receiving set which is connected to the filament. This signal lamp and the means for completing the circuit thereof will be hereinafter more fully explained.

The check controlled apparatus includes a chute 22, which chute is preferably in the forni of a fiat chute of a size to accom'- modate the checks to bel employed, the closed walls ofthe chute at the lower end thereotI being correspondingly notched,- as at 23, leaving guides 24 to receive the edges of the check, generally designated at C. The notch ot' the upper wall is extended, as indicated at 25. i-.The chute is arranged in an inclined position and above the u'pper end of the notch has secured there.- to an insulating supporting post 26. To this sup-porting post 26 is pivotcd an arm 27 which is electrically connected by. a wire 28 with the second terminal of the signal lamp 20. The lower end of this arm is directed into the notch 25 and is ot greater weight than the upper end thereof so that it normally rests against the bottom of this chute.

When this is the case, its upper end comes into engagement with a stationary contact 29 carried b the c hute 22 and electrically connected t lrough a manually operable switch 30 with the wire 15. This wire as will `be noted from an inspection of the loop circuitvis out of circuit with the battery 10 until the loop circuit is completed, either by the switch 16 or by bridging of the contacts j 14, 15B. When this circuit is completed through the switch 16,'the switch 30 will be opened as at this time operation of the set without the use ot checks is contemplated. lVhen the circuit `is completed through the wire 14 and the switch30 is closed, the circuit of the lamp 20 is completed and this lamp,- which is arranged at some cons icucheck to be arranged beneath the end of the,

lever mustlbe supported from a' second check which is arranged at, the lower end of the chute, as will be hereinafter more fully explained, energizing of the lamp occurs only when there isbut one check in the machine' and the machine` is being check operated.

Pivoted to the lower end of the chute. upon v17a and 18.

brackets 32 carried by thegu'ides 24 .is an insulated 'lever 33. To the upper end of this lever are secured the contacts 14, 15, The connection between this lever and the wires 14, 15, 17 and 18 being accomplished through exible terminals, as

shown,'so thatthe upper end ofthe lever is A.

freely movable. Pivoted to the lower end of the lever between the pivot threot' and its lower extremity lis an arm 34 having one end extending beneath the end of the chutel and into the notch 23, this end being .indicated at 35, and at its opposite end having secured hereto an insulating bar 36. This arm itself is of conducting-materiah for a purpose presently to appear.

lVhile the end 35 of the arm 34 is positioned beneath the chute for the reception of checks passing downwardly through the chute, this only occurs in what may be termed the normal position of the lever 33 which is the' position illustrated'in Figure 8. W'hile the lever is in this position and no check is within the chute,y the end bearing the insulating strip 36 of thel arm 34'- is the heavier and this arm remains in the. position f.

-against the end 35' of the arm, the arm is -overbalanced` and these brldging contacts This insulating stripV 37 and`38 are moved into engagement with the pairs of contacts 14a and 15a respectively v to closel the circuits thereof, At the same time, the end of the arm 1n its downward movement under the mfiuence of the inserted check comes into engagement with a roo lever is an electro-magnet 41, the armature L 42 of which is connected with the lower end of the lever 33 by a link 43. Onel terminalot' the electro-magnet is connected with one terminal of,a battery 44 by a wire 45. The opposite terminal is connected by a wiie 46 to a terminal 47 of a connection bar 48. This terminal is connected with the end 35 of the arm 34 by a flexible lead 49. The

contact 39 is .connected 'by a flexible-lead 50 lll) to second bind-ing post. of the-arm'48 and from this binding post a wire 51 is led. I

A timing apparatus which may be of any suitable character .is generally designated at 52 and includes a rotating brush 53 operating .from the lninute hand of a-clock and associated with an annulus154. This annulus is divided into spaces corresponding t0 contact 39, a circuit .will be established 17 and 18 are not broken.

through the electro-magnet by the clock mechanism, at five minute intervals. lVhen the electro-magnet is energized, the lever 3?) is moved to the position shown in Figure 2 so that the arm end 35 is Withdra'wn from beneath the check,l permitting the saine to fall into a receptacle 58. lVhen the 'we-ight of the 4check is removed from the arm 35, this arm does not rotate about its pivot for the. reason that when the lever' is in the position shown in Figure 2, the upper` end ot ,the arm 35 is over-balanced and accordingly the circuits of the loop connections 14, 15, Then positioned through the electro-magnet, the lever has an varm 59 projecting intothe upper end of the notch'23 and into the. path of checks following the check which is to be released, thus preventing more than one check from passing vfrom the chute during such momentary operation., lVhenthe lever is in its normal position, this aim is out of the path of the check. Accordingly, when the brush of the clock work mechanism is shifted sufficiently to Aopen the circuit of the electromagnet and permit the lever 33 to be returned to its normal position by the spring 40, a check will be released and will engage the arm 35 to maintain the circuit of the' loop connections 14, 15, 17 and 18. If, on the contrary,l there is no check -present in the chute, this arm will move to its open 4position and will open these circuits.

The complete operation of the deviceis as follows If the device is to be employed Vmerely as a radio set without the use of When operating'a set by means ot checks,

these dials are first properly positioned and the phones or loud speaker connected Vat the 4stagethrough which it is desired that the station selected be heard. The proper check or series of these checks is then inserted.

The first 4check engaging the arm 34 will complete the circuit of this arm with the contact -39 and of the time control mechanism with the exception of the clockswitch. At the same time, the Weight of the check will cause completion of the loop circuits 14, 15,

17 and 18 and ignite the filaments of th'e audions 12 and 13. If but a single check is inserted, it will at the same time cause the lamp 20 to'be energized While if a plurality of checks have been entered, this lamp will be inoperative. If the roper adjustments have been made, the station should be heard Aimmediately upon insertion of the check.

Assuming that a plurality ofA checks have been entered at tive minute intervals, one

check will be withdrawn at a time until but a single check remains in the slot. llVhen this occurs, the lamp 2() is energized, warn ing that the five minute interval starting is the last paid for by the checks. As the last check leaves the machine, the circuit of the loop circuits 14, 15, 17 and 18 are broken and the filaments of the audions extin-` guished.`

It will be obvious that while the filament circuit of the audion has been selected as the proper point for breaking the circuits' without materially departing from the spirit of my invention and I accordingly do not limit myself to such specific structure except as hereinafter claimed.

I claim 1. In combination with a radio receiving circuit including an audion bulb, an open filament-lighting circuit for the bulb and check controlled means for closing the fila.

ment circuit, including a check chute for the simultaneous reception of a plurality of checks, a vsignal element and means for rendering the signa-l element operative when the filament circuit of the audion is closed and but a single check remains in the check chute.

2. In combination with a radio receiving circuit including an audion bulb, an open filament-lighting circuit for the bulb, check controlled means for closing the filament circuit, including a check chute fory t-he simultaneous reception of a plurality of checks, a signal element and means for rendering the signal element loperative when non the filament circuit of the audion is closed tionary contact to complete the circuit, the

disposed beneath the check chute to receive` a check passing therethrough, an insulating bar to which said arm is pivoted and having spaced contacts connected at opposite sides of the opening of the filament lighting cir-- cuit and a bridging contact carried by said 'pivoted arm and `moved into lengagement with'the spaced contacts when the check engages` the arm, a stationary contact arranged beneath said arm, a time operated circuit closer having contacts closed at predetermined intervals, asource of energy and an electro-magnet with which one terminal of the source of energy is connected, the opposite terminal of the source of energy being connected with the last named contact through the time operated circuit closer, a

connection between the second terminal. of

the electro-magnet and said bar whereby a check engaging with the arm completes the circuit of said electro-magnetvwith the exception of the contacts on said time operated circuit closer and a connection between the armature of the electro-magnet and the support of said arm for shifting said support and arm to permit release of' the check when the circuit is completed through said time cotrolled apparatus.

ln combination with a radio receiving 'circuit including an audion bulb having an open filament-lighting circuit, an electrical signal connected across the terminals of the 'n.udion, checkv controlled means yfor completing the filament circuit of the audion and means for opening the circuit of the signal when there is more than one check present in the check controlledmeans.

5. Invcombination with a radio receiving circuit including an audion bulb having an open filament-lighting circuit, an electrical signal connected across the terminals of the audion, check controlled means for completing thefilamcnt-circuitof the audion-.and

means for opening the circuit ofthesignal l when there is more than one checleA4 `P @at in the check vcontrolled means including a switch having a pivoted arm arranged 4in the path of checks passing to thacheck' controlled apparatus and positioned to be engaged by the check next above, ,that check engaged with the check. controlled'a paratus, said arm when engaged withac eckbeing shifted to open thecirouit.

6. In combination with 'a yradio receiving circuit includingan audion bulb having an open filament-lighting circuit, an electrical signal connected across the terminals of the audion check controlled means for completing the filament circuit of the audion, means for opening the circuit of the signal Awhen there is more than one check present in the check controlled means, manually controllable moans fordosing the circuit of the filament of the audion and manually controllable means'for opening the circuit of the signal. l A

7 ln combination with a radio receiving tcircuit including an audion bulb, an open filament-lighting circuit for the bulb, an electrically, operable `signal connected across the filament terminals of the bulb and havmg in series therewith a switch. check operated mechanismfor closing ythe circuit of the filament, including: a pivoted switch and a chute for delivering checks to the switch, the first named switch having an arm normally overlying the under side of the check chute at the point occupied by the check next above that engaged with ysaid present in the check chute.

8. In combination with a radio receiving circuit including an audion bulb, an open filament-lighting circuit for the bulb, an lelectrically operable signal connected across the filament terminals of the bulb and 'having inseries therewith a switch, check operatedemechanism for closing thv circuit ofthe filament, including a pivoted switch,

normally overlying theunder side of the check chute at the point occupied by the check next above that engaged with said pivoted switch, in'which normal position of said arm the terminals of the first named switch are engaged, said arm being spaced from the under wall of the check chute a distance less than the thickness of a` check whereby the first named switch is opened and the signal rendered inoperative by the llf) u a chute for delivering checks to the switch, y the. first named switch having an arm next to the bottom check engaging said arm when there are a plurality of checks within the check chute, said signal' also being rendered inoperative by the opening of the filament circuit when there is no check pres- ,v

ent in the check chute and manually ooerable means for rendering the slgnal inoperative.

circuit including an audion bulb, an open lfilament-lighting circuit. forv the bulb, an electrically operable signal connected across tlie filament terminals of the bulb and having in series therewith a switch, check o rated mechanism for closing the circuit o the filament, including' a pivoted sw-itch and a chute for delivering checks to the switch, the first named switch having an arm normally overlying the underside of the check chute at the point occupiedv by the check next abovethatengaged with said pivoted switcli,

in which normal position of said arm the terminals of the first named switch are eni gaged, said arm being spaced from the under vwall of the check chute a distance less than the thickness of a'check whereby the first named switch isopened'and the signal rendered inoperative by the next to the bottom check engaging said arm when there are aplurality of checks within the check chute, said signal also being rendered inoperative by the opening of the filament circuit when there is no check present in the check chute and time controlled means rendered operative b the insertion of a check releasing the chec when-the pivoted switch has been in closed position through a predetermined interval.

10. In combination with a radio receiving circuit including an audion bulb, an open filament-lighting circuit for the bulb, -anv electrically operable signal connected across the filament terminals of the bulb and having in sei'ies therewith a switch, check operated mechanism -for closing the circuit of the filament, including a pivoted switch and a-chute for delivering checks to the switch,

the first named switch having 'an arm4 normally overlying the under side of the check.

chute at the point occupied vby the the check next above that engaged with said pivoted switch,. in which normal position of said arm the .terminals of the first named switch are engaged, said arm being spaced from the Viinderwall of the check chute' a'dstance less Athan the thickness of a check'wherebv the firstnamed switch isopenedand the signal l1. In combination with a radio receiving circuit including an audion bulb, an open 'filament-lighting circuit for the bulb, an

electrically operable signal connected across the filament terminals of the bulb and having in series therewith a switch, check operated mechanism for closing the circuit of the filament, including a pivoted switch, a chute for delivering checks to the switch, the first named switch having an arm normally overlying tlic under side of the check chute at the point occupied by the check next above that engaged with said pivoted switch, in which normal position of said arm the terminals of the first named switch are engaged, said arm being spaced fromthe, under wall Vof the check chute a distance less tlianthe thickness of a check whereby the first named switch is opened and tlie signal rendered inoperative by the next to tlie bottom check engaging said arm when there are a plurality of checks within the check chute, said signal also being rendered inoperative by the opening of the filament circuit when there is no check present in the check chute, time controlled means for releasing or for engaging thelast named switch after a predetermined period of engagement' and means for maintaining the check engaged by the first `named switch against movement during operation of the time controlled means and until the last named switch is restored to its check receiving position.

12. In combination with a radio receiving circuit including an audion bulb, an open filament-lighting circuit for thel bulb, an electrically operable signal connected across lthe filament terminals of the bulb and having in series therewith a switch, check operated mechanism for closing the circuit of the filament, including a pivoted switch and a chute for delivering checks to the switch, the first named switch having an arm normally overlying the under side of the check chiite at the point occupied by the check next above that engaged with saidl pivoted switch, in ,which normal position of said arm the terminals of the first named switch are engaged, said arm being spaced from the under wall vof the check chute a distance less than the thickness of a check whereby the -are a plurality of checks within the check chute, said. signal also being rendered inoperative by the opening of the filament circuit when there is no check present in the check chute, time controlled means rendered operative by the insertion of a cheek releasing the check when the pivoted .switch has been in the closed position through a prede termined interval and means for maintaining 4the remaining checks against movement during the release of the switch engaged check. u

In testimony whereof I hereunto afiix my signature.

ERNEST E. WESSON. 

